1117 lines
24 KiB
C
1117 lines
24 KiB
C
/***************************************************************************
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* Copyright (C) 2011 by Mathias Kuester *
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* Mathias Kuester <kesmtp@freenet.de> *
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* *
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* This code is based on https://github.com/texane/stlink *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/* project specific includes */
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#include <helper/binarybuffer.h>
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#include <jtag/interface.h>
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#include <jtag/stlink/stlink_layout.h>
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#include <jtag/stlink/stlink_transport.h>
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#include <jtag/stlink/stlink_interface.h>
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#include <target/target.h>
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#include "libusb_common.h"
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#define ENDPOINT_IN 0x80
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#define ENDPOINT_OUT 0x00
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#define STLINK_RX_EP (1|ENDPOINT_IN)
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#define STLINK_TX_EP (2|ENDPOINT_OUT)
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#define STLINK_CMD_SIZE (16)
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#define STLINK_TX_SIZE (4*128)
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#define STLINK_RX_SIZE (4*128)
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enum stlink_jtag_api_version {
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STLINK_JTAG_API_V1 = 0,
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STLINK_JTAG_API_V2,
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};
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/** */
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struct stlink_usb_version {
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/** */
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int stlink;
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/** */
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int jtag;
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/** */
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int swim;
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/** highest supported jtag api version */
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enum stlink_jtag_api_version jtag_api_max;
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};
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/** */
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struct stlink_usb_handle_s {
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/** */
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struct jtag_libusb_device_handle *fd;
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/** */
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struct libusb_transfer *trans;
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/** */
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uint8_t txbuf[STLINK_TX_SIZE];
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/** */
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uint8_t rxbuf[STLINK_RX_SIZE];
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/** */
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enum stlink_transports transport;
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/** */
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struct stlink_usb_version version;
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/** */
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uint16_t vid;
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/** */
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uint16_t pid;
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/** */
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uint32_t sg_tag;
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/** this is the currently used jtag api */
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enum stlink_jtag_api_version jtag_api;
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};
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#define STLINK_OK 0x80
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#define STLINK_FALSE 0x81
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#define STLINK_CORE_RUNNING 0x80
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#define STLINK_CORE_HALTED 0x81
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#define STLINK_CORE_STAT_UNKNOWN -1
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#define STLINK_GET_VERSION 0xF1
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#define STLINK_DEBUG_COMMAND 0xF2
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#define STLINK_DFU_COMMAND 0xF3
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#define STLINK_SWIM_COMMAND 0xF4
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#define STLINK_GET_CURRENT_MODE 0xF5
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#define STLINK_DEV_DFU_MODE 0x00
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#define STLINK_DEV_MASS_MODE 0x01
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#define STLINK_DEV_DEBUG_MODE 0x02
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#define STLINK_DEV_SWIM_MODE 0x03
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#define STLINK_DEV_UNKNOWN_MODE -1
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#define STLINK_DFU_EXIT 0x07
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#define STLINK_SWIM_ENTER 0x00
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#define STLINK_SWIM_EXIT 0x01
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#define STLINK_DEBUG_ENTER_JTAG 0x00
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#define STLINK_DEBUG_GETSTATUS 0x01
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#define STLINK_DEBUG_FORCEDEBUG 0x02
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#define STLINK_DEBUG_APIV1_RESETSYS 0x03
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#define STLINK_DEBUG_APIV1_READALLREGS 0x04
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#define STLINK_DEBUG_APIV1_READREG 0x05
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#define STLINK_DEBUG_APIV1_WRITEREG 0x06
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#define STLINK_DEBUG_READMEM_32BIT 0x07
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#define STLINK_DEBUG_WRITEMEM_32BIT 0x08
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#define STLINK_DEBUG_RUNCORE 0x09
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#define STLINK_DEBUG_STEPCORE 0x0a
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#define STLINK_DEBUG_APIV1_SETFP 0x0b
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#define STLINK_DEBUG_READMEM_8BIT 0x0c
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#define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
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#define STLINK_DEBUG_APIV1_CLEARFP 0x0e
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#define STLINK_DEBUG_APIV1_WRITEDEBUGREG 0x0f
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#define STLINK_DEBUG_APIV1_SETWATCHPOINT 0x10
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#define STLINK_DEBUG_ENTER_JTAG 0x00
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#define STLINK_DEBUG_ENTER_SWD 0xa3
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#define STLINK_DEBUG_APIV1_ENTER 0x20
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#define STLINK_DEBUG_EXIT 0x21
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#define STLINK_DEBUG_READCOREID 0x22
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#define STLINK_DEBUG_APIV2_ENTER 0x30
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#define STLINK_DEBUG_APIV2_RESETSYS 0x32
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#define STLINK_DEBUG_APIV2_READREG 0x33
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#define STLINK_DEBUG_APIV2_WRITEREG 0x34
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#define STLINK_DEBUG_APIV2_READALLREGS 0x3A
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/** */
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enum stlink_mode {
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STLINK_MODE_UNKNOWN = 0,
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STLINK_MODE_DFU,
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STLINK_MODE_MASS,
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STLINK_MODE_DEBUG_JTAG,
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STLINK_MODE_DEBUG_SWD,
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STLINK_MODE_DEBUG_SWIM
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};
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/** */
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static void stlink_usb_recv_v1_create_cmd(char *b, int s, uint32_t tag, uint32_t rxsize,
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uint8_t flag, uint8_t lun, uint8_t length)
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{
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int i = 0;
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memset(b, 0x00, s);
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/* fill the send buffer */
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strcpy(b, "USBC");
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i += 4;
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buf_set_u32(b+i, 0, 32, tag);
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i += 4;
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buf_set_u32(b+i, 0, 32, rxsize);
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i += 4;
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b[i++] = flag;
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b[i++] = lun;
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b[i++] = length;
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}
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/** */
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static int stlink_usb_recv_v1_mass_storage_cmd(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
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int rxsize)
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{
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char sg_buffer[31];
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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h->sg_tag = (h->sg_tag + 1) & 1;
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stlink_usb_recv_v1_create_cmd(sg_buffer, 31, h->sg_tag, rxsize, STLINK_TX_EP, 0x00, txsize);
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memcpy(sg_buffer+15, txbuf, 10);
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if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)sg_buffer, 31,
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1000) != 31) {
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printf("send failed\n");
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return ERROR_FAIL;
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}
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return ERROR_OK;
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}
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#define REQUEST_SENSE 0x03
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#define REQUEST_SENSE_LENGTH 18
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/** */
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static int stlink_usb_recv_v1_get_status(void *handle, char *sg_buffer, int len)
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{
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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/* read status */
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memset(sg_buffer, 0x00, len);
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if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)sg_buffer,
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len, 1000) != len)
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return ERROR_FAIL;
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uint32_t t1, t2;
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t1 = buf_get_u32(sg_buffer+0, 0, 32);
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t2 = buf_get_u32(sg_buffer+4, 0, 32);
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/* check for USBS */
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if (t1 != 0x53425355)
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return ERROR_FAIL;
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return ERROR_OK;
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}
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/** */
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static int stlink_usb_recv_v1_get_sense(void *handle)
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{
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struct stlink_usb_handle_s *h;
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char cdb[16];
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char sg_buffer[31];
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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h->sg_tag = (h->sg_tag + 1) & 1;
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cdb[0] = REQUEST_SENSE;
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cdb[4] = REQUEST_SENSE_LENGTH;
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stlink_usb_recv_v1_create_cmd(sg_buffer, 31, h->sg_tag, REQUEST_SENSE_LENGTH, STLINK_TX_EP,
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0x00, 16);
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memcpy(sg_buffer+15, cdb, 16);
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if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)sg_buffer, 16,
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1000) != 16)
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return ERROR_FAIL;
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if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)cdb,
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16, 1000) != 16)
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return ERROR_FAIL;
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if (stlink_usb_recv_v1_get_status(handle, sg_buffer, 13) != ERROR_OK)
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return ERROR_FAIL;
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/* check for sense */
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if (sg_buffer[12] != 0)
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return ERROR_FAIL;
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/* if (sense[0] != 0x70 && sense[0] != 0x71) */
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return ERROR_OK;
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}
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/** */
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static int stlink_usb_recv_v1(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
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int rxsize)
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{
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int err;
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char sg_buffer[31];
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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err = stlink_usb_recv_v1_mass_storage_cmd(handle, txbuf, txsize, rxbuf, rxsize);
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if (err != ERROR_OK)
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return err;
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if (rxsize && rxbuf) {
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if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)rxbuf,
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rxsize, 1000) != rxsize) {
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LOG_DEBUG("jtag_libusb_bulk_read");
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return ERROR_FAIL;
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}
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}
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if (stlink_usb_recv_v1_get_status(handle, sg_buffer, 13) != ERROR_OK)
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return ERROR_FAIL;
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/* check for sense */
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if (sg_buffer[12] == 1) {
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LOG_DEBUG("get sense");
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err = stlink_usb_recv_v1_get_sense(handle);
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}
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return err;
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}
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/** */
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static int stlink_usb_recv_v2(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
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int rxsize)
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{
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)txbuf, txsize,
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1000) != txsize) {
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return ERROR_FAIL;
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}
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if (rxsize && rxbuf) {
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if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)rxbuf,
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rxsize, 1000) != rxsize) {
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return ERROR_FAIL;
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}
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}
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return ERROR_OK;
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}
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/** */
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static int stlink_usb_recv(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
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int rxsize)
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{
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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if (h->version.stlink == 1) {
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return stlink_usb_recv_v1(handle, txbuf, txsize, rxbuf, rxsize);
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} else {
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if (txsize < STLINK_CMD_SIZE)
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txsize = STLINK_CMD_SIZE;
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return stlink_usb_recv_v2(handle, txbuf, txsize, rxbuf, rxsize);
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}
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}
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/** */
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static void stlink_usb_init_buffer(void *handle)
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{
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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memset(h->txbuf, 0, STLINK_CMD_SIZE);
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}
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/** */
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static int stlink_usb_version(void *handle)
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{
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int res;
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uint16_t v;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_GET_VERSION;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 6);
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if (res != ERROR_OK)
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return res;
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v = (h->rxbuf[0] << 8) | h->rxbuf[1];
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h->version.stlink = (v >> 12) & 0x0f;
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h->version.jtag = (v >> 6) & 0x3f;
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h->version.swim = v & 0x3f;
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h->vid = buf_get_u32(h->rxbuf, 16, 16);
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h->pid = buf_get_u32(h->rxbuf, 32, 16);
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/* set the supported jtag api version
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* V1 doesn't support API V2 at all
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* V2 support API V2 since JTAG V13
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*/
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if ((h->version.stlink == 2) && (h->version.jtag > 12))
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h->version.jtag_api_max = STLINK_JTAG_API_V2;
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else
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h->version.jtag_api_max = STLINK_JTAG_API_V1;
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LOG_DEBUG("STLINK v%d JTAG v%d API v%d SWIM v%d VID %04X PID %04X",
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h->version.stlink,
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h->version.jtag,
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(h->version.jtag_api_max == STLINK_JTAG_API_V1) ? 1 : 2,
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h->version.swim,
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h->vid,
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h->pid);
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return ERROR_OK;
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}
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/** */
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static int stlink_usb_current_mode(void *handle, uint8_t *mode)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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h->txbuf[0] = STLINK_GET_CURRENT_MODE;
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
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if (res != ERROR_OK)
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return res;
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*mode = h->rxbuf[0];
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return ERROR_OK;
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}
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/** */
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static int stlink_usb_mode_enter(void *handle, enum stlink_mode type)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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switch (type) {
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case STLINK_MODE_DEBUG_JTAG:
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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if (h->jtag_api == STLINK_JTAG_API_V1)
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h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER;
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else
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h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER;
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h->txbuf[2] = STLINK_DEBUG_ENTER_JTAG;
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break;
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case STLINK_MODE_DEBUG_SWD:
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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if (h->jtag_api == STLINK_JTAG_API_V1)
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h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER;
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else
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h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER;
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h->txbuf[2] = STLINK_DEBUG_ENTER_SWD;
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break;
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case STLINK_MODE_DEBUG_SWIM:
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h->txbuf[0] = STLINK_SWIM_COMMAND;
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h->txbuf[1] = STLINK_SWIM_ENTER;
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break;
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case STLINK_MODE_DFU:
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case STLINK_MODE_MASS:
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default:
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return ERROR_FAIL;
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}
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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/** */
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static int stlink_usb_mode_leave(void *handle, enum stlink_mode type)
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{
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int res;
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struct stlink_usb_handle_s *h;
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assert(handle != NULL);
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h = (struct stlink_usb_handle_s *)handle;
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stlink_usb_init_buffer(handle);
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switch (type) {
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case STLINK_MODE_DEBUG_JTAG:
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case STLINK_MODE_DEBUG_SWD:
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h->txbuf[0] = STLINK_DEBUG_COMMAND;
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h->txbuf[1] = STLINK_DEBUG_EXIT;
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break;
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case STLINK_MODE_DEBUG_SWIM:
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h->txbuf[0] = STLINK_SWIM_COMMAND;
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h->txbuf[1] = STLINK_SWIM_EXIT;
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break;
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case STLINK_MODE_DFU:
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h->txbuf[0] = STLINK_DFU_COMMAND;
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h->txbuf[1] = STLINK_DFU_EXIT;
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break;
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case STLINK_MODE_MASS:
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default:
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return ERROR_FAIL;
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}
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res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
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if (res != ERROR_OK)
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return res;
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return ERROR_OK;
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}
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|
/** */
|
|
static int stlink_usb_init_mode(void *handle)
|
|
{
|
|
int res;
|
|
uint8_t mode;
|
|
enum stlink_mode emode;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
res = stlink_usb_current_mode(handle, &mode);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
LOG_DEBUG("MODE: %02X", mode);
|
|
|
|
/* try to exit current mode */
|
|
switch (mode) {
|
|
case STLINK_DEV_DFU_MODE:
|
|
emode = STLINK_MODE_DFU;
|
|
break;
|
|
case STLINK_DEV_DEBUG_MODE:
|
|
emode = STLINK_MODE_DEBUG_SWD;
|
|
break;
|
|
case STLINK_DEV_SWIM_MODE:
|
|
emode = STLINK_MODE_DEBUG_SWIM;
|
|
break;
|
|
default:
|
|
emode = STLINK_MODE_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
if (emode != STLINK_MODE_UNKNOWN) {
|
|
res = stlink_usb_mode_leave(handle, emode);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
}
|
|
|
|
res = stlink_usb_current_mode(handle, &mode);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
LOG_DEBUG("MODE: %02X", mode);
|
|
|
|
/* set selected mode */
|
|
switch (h->transport) {
|
|
case STLINK_TRANSPORT_SWD:
|
|
emode = STLINK_MODE_DEBUG_SWD;
|
|
break;
|
|
case STLINK_TRANSPORT_JTAG:
|
|
emode = STLINK_MODE_DEBUG_JTAG;
|
|
break;
|
|
case STLINK_TRANSPORT_SWIM:
|
|
emode = STLINK_MODE_DEBUG_SWIM;
|
|
break;
|
|
default:
|
|
emode = STLINK_MODE_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
if (emode == STLINK_MODE_UNKNOWN) {
|
|
LOG_ERROR("selected mode (transport) not supported");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
res = stlink_usb_mode_enter(handle, emode);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
res = stlink_usb_current_mode(handle, &mode);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
LOG_DEBUG("MODE: %02X", mode);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_idcode(void *handle, uint32_t *idcode)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_READCOREID;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
*idcode = le_to_h_u32(h->rxbuf);
|
|
|
|
LOG_DEBUG("IDCODE: %08X", *idcode);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static enum target_state stlink_usb_state(void *handle)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
if (h->jtag_api == STLINK_JTAG_API_V2)
|
|
return TARGET_UNKNOWN;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_GETSTATUS;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
|
|
|
|
if (res != ERROR_OK)
|
|
return TARGET_UNKNOWN;
|
|
|
|
if (h->rxbuf[0] == STLINK_CORE_RUNNING)
|
|
return TARGET_RUNNING;
|
|
if (h->rxbuf[0] == STLINK_CORE_HALTED)
|
|
return TARGET_HALTED;
|
|
|
|
return TARGET_UNKNOWN;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_reset(void *handle)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
|
|
if (h->jtag_api == STLINK_JTAG_API_V1)
|
|
h->txbuf[1] = STLINK_DEBUG_APIV1_RESETSYS;
|
|
else
|
|
h->txbuf[1] = STLINK_DEBUG_APIV2_RESETSYS;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
LOG_DEBUG("RESET: %08X", h->rxbuf[0]);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_run(void *handle)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
if (h->jtag_api == STLINK_JTAG_API_V2)
|
|
return ERROR_FAIL;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_RUNCORE;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_halt(void *handle)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
if (h->jtag_api == STLINK_JTAG_API_V2)
|
|
return ERROR_FAIL;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_FORCEDEBUG;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_step(void *handle)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
if (h->jtag_api == STLINK_JTAG_API_V2)
|
|
return ERROR_FAIL;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_STEPCORE;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_read_regs(void *handle)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
if (h->jtag_api == STLINK_JTAG_API_V1)
|
|
h->txbuf[1] = STLINK_DEBUG_APIV1_READALLREGS;
|
|
else
|
|
h->txbuf[1] = STLINK_DEBUG_APIV2_READALLREGS;
|
|
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 84);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_read_reg(void *handle, int num, uint32_t *val)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
if (h->jtag_api == STLINK_JTAG_API_V1)
|
|
h->txbuf[1] = STLINK_DEBUG_APIV1_READREG;
|
|
else
|
|
h->txbuf[1] = STLINK_DEBUG_APIV2_READREG;
|
|
h->txbuf[2] = num;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
*val = le_to_h_u32(h->rxbuf);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_write_reg(void *handle, int num, uint32_t val)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
if (h->jtag_api == STLINK_JTAG_API_V1)
|
|
h->txbuf[1] = STLINK_DEBUG_APIV1_WRITEREG;
|
|
else
|
|
h->txbuf[1] = STLINK_DEBUG_APIV2_WRITEREG;
|
|
h->txbuf[2] = num;
|
|
h_u32_to_le(h->txbuf + 3, val);
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len,
|
|
uint8_t *buffer)
|
|
{
|
|
int res;
|
|
uint16_t read_len = len;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_READMEM_8BIT;
|
|
h_u32_to_le(h->txbuf + 2, addr);
|
|
h_u16_to_le(h->txbuf + 2 + 4, len);
|
|
|
|
/* we need to fix read length for single bytes */
|
|
if (read_len == 1)
|
|
read_len++;
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, read_len);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
memcpy(buffer, h->rxbuf, len);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len,
|
|
const uint8_t *buffer)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_WRITEMEM_8BIT;
|
|
h_u32_to_le(h->txbuf + 2, addr);
|
|
h_u16_to_le(h->txbuf + 2 + 4, len);
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
|
|
uint32_t *buffer)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
len *= 4;
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_READMEM_32BIT;
|
|
h_u32_to_le(h->txbuf + 2, addr);
|
|
h_u16_to_le(h->txbuf + 2 + 4, len);
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, len);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
memcpy(buffer, h->rxbuf, len);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
|
|
const uint32_t *buffer)
|
|
{
|
|
int res;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
assert(handle != NULL);
|
|
|
|
h = (struct stlink_usb_handle_s *)handle;
|
|
|
|
stlink_usb_init_buffer(handle);
|
|
|
|
len *= 4;
|
|
|
|
h->txbuf[0] = STLINK_DEBUG_COMMAND;
|
|
h->txbuf[1] = STLINK_DEBUG_WRITEMEM_32BIT;
|
|
h_u32_to_le(h->txbuf + 2, addr);
|
|
h_u16_to_le(h->txbuf + 2 + 4, len);
|
|
|
|
res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0);
|
|
|
|
if (res != ERROR_OK)
|
|
return res;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_open(struct stlink_interface_param_s *param, void **fd)
|
|
{
|
|
int err;
|
|
struct stlink_usb_handle_s *h;
|
|
|
|
LOG_DEBUG("stlink_usb_open");
|
|
|
|
h = malloc(sizeof(struct stlink_usb_handle_s));
|
|
|
|
if (h == 0) {
|
|
LOG_DEBUG("malloc failed");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
h->transport = param->transport;
|
|
|
|
const uint16_t vids[] = { param->vid, 0 };
|
|
const uint16_t pids[] = { param->pid, 0 };
|
|
|
|
LOG_DEBUG("transport: %d vid: %04x pid: %04x", param->transport,
|
|
param->vid, param->pid);
|
|
|
|
if (jtag_libusb_open(vids, pids, &h->fd) != ERROR_OK) {
|
|
LOG_ERROR("open failed");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
jtag_libusb_set_configuration(h->fd, 0);
|
|
|
|
if (jtag_libusb_claim_interface(h->fd, 0) != ERROR_OK) {
|
|
LOG_DEBUG("claim interface failed");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
/* wrap version for first read */
|
|
switch (param->pid) {
|
|
case 0x3744:
|
|
h->version.stlink = 1;
|
|
break;
|
|
default:
|
|
h->version.stlink = 2;
|
|
break;
|
|
}
|
|
|
|
/* get the device version */
|
|
err = stlink_usb_version(h);
|
|
|
|
if (err != ERROR_OK) {
|
|
LOG_ERROR("read version failed");
|
|
jtag_libusb_close(h->fd);
|
|
free(h);
|
|
return err;
|
|
}
|
|
|
|
/* compare usb vid/pid */
|
|
if ((param->vid != h->vid) || (param->pid != h->pid))
|
|
LOG_INFO("vid/pid are not identical: %04X/%04X %04X/%04X",
|
|
param->vid, param->pid,
|
|
h->vid, h->pid);
|
|
|
|
/* check if mode is supported */
|
|
err = ERROR_OK;
|
|
|
|
switch (h->transport) {
|
|
case STLINK_TRANSPORT_SWD:
|
|
case STLINK_TRANSPORT_JTAG:
|
|
if (h->version.jtag == 0)
|
|
err = ERROR_FAIL;
|
|
break;
|
|
case STLINK_TRANSPORT_SWIM:
|
|
if (h->version.swim == 0)
|
|
err = ERROR_FAIL;
|
|
break;
|
|
default:
|
|
err = ERROR_FAIL;
|
|
break;
|
|
}
|
|
|
|
if (err != ERROR_OK) {
|
|
LOG_ERROR("mode (transport) not supported by device");
|
|
jtag_libusb_close(h->fd);
|
|
free(h);
|
|
return err;
|
|
}
|
|
|
|
/* set the used jtag api */
|
|
h->jtag_api = STLINK_JTAG_API_V1;
|
|
|
|
/* initialize the debug hardware */
|
|
err = stlink_usb_init_mode(h);
|
|
|
|
if (err != ERROR_OK) {
|
|
LOG_ERROR("init mode failed");
|
|
jtag_libusb_close(h->fd);
|
|
free(h);
|
|
return err;
|
|
}
|
|
|
|
*fd = h;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
static int stlink_usb_close(void *fd)
|
|
{
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/** */
|
|
struct stlink_layout_api_s stlink_usb_layout_api = {
|
|
/** */
|
|
.open = stlink_usb_open,
|
|
/** */
|
|
.close = stlink_usb_close,
|
|
/** */
|
|
.idcode = stlink_usb_idcode,
|
|
/** */
|
|
.state = stlink_usb_state,
|
|
/** */
|
|
.reset = stlink_usb_reset,
|
|
/** */
|
|
.run = stlink_usb_run,
|
|
/** */
|
|
.halt = stlink_usb_halt,
|
|
/** */
|
|
.step = stlink_usb_step,
|
|
/** */
|
|
.read_regs = stlink_usb_read_regs,
|
|
/** */
|
|
.read_reg = stlink_usb_read_reg,
|
|
/** */
|
|
.write_reg = stlink_usb_write_reg,
|
|
/** */
|
|
.read_mem8 = stlink_usb_read_mem8,
|
|
/** */
|
|
.write_mem8 = stlink_usb_write_mem8,
|
|
/** */
|
|
.read_mem32 = stlink_usb_read_mem32,
|
|
/** */
|
|
.write_mem32 = stlink_usb_write_mem32,
|
|
};
|